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Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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The average office desk has 400 times more bacteria on it than a toilet.

The internal organization of cells, tissues, organs, and organ systems in a mammal. The internal organization of cells, tissues, organs, and organ systems in a mammal.
Biology Is Studied at Many Levels of Organization (Part 2) Biology Is Studied at Many Levels of Organization (Part 2)
The light reactions and chemiosmosis: the organization of the thylakoid membrane. The light reactions and chemiosmosis: the organization of the thylakoid membrane.
If the vacuum hose is removed from the fuel-pressure regulator when the engine is running, the ... If the vacuum hose is removed from the fuel-pressure regulator when the engine is running, the ...
Start the vehicle’s engine and let run at 1000–1500 RPM. The engine is now running on fuel ... Start the vehicle’s engine and let run at 1000–1500 RPM. The engine is now running on fuel ...
Levels of Ecological Organization Levels of Ecological Organization
Video: The Krebs Cycle Animation

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